Get max occurred character in string in c#

Most of the time in interview (fresher or 1 year) interviewer asks this questing and says that not to use inbuilt function use only basic function and find maximum occurring character for a string entered as well as find the no of occurrence of that character.

Following code find the maximum occurring character in the given string it takes string as a input and returns maximum occurred character as char of that string.

WAP For Maximum Occurred Char - Code C#

public char MostOccurringCharInString(string charString)

{

    int mostOccurrence = -1;

    char mostOccurringChar = ' ';

    foreach (char currentChar  in charString)

    {

        int foundCharOccreence = 0;

        foreach (char charToBeMatch in charString)

        {

            if (currentChar == charToBeMatch)

                foundCharOccreence++;

        }

        if (mostOccurrence < foundCharOccreence)

        {

            mostOccurrence = foundCharOccreence;

            mostOccurringChar = currentChar;

        }

    }

    return mostOccurringChar;

}

Only need to calculate max occurrence of max occurred character.

Following code find the occurrence of the maximum occurred character in the given string it takes string as a input and returns occurrence of maximum occurred character as int of that string.

WAP For Occurrence of the Maximum Occurred Char - Code C#

public int MostOccurrenceOfCharInString(string charString)

{

    int mostOccurrence = -1;

    char mostOccurringChar = ' ';

    foreach (char currentChar  in charString)

    {

        int foundCharOccreence = 0;

        foreach (char charToBeMatch in charString)

        {

            if (currentChar == charToBeMatch)

                foundCharOccreence++;

        }

        if (mostOccurrence < foundCharOccreence)

        {

            mostOccurrence = foundCharOccreence;

            mostOccurringChar = currentChar;

        }

    }

    return mostOccurrence;

}